165/2002 Sb.
DECREE
The Czech Mining Authority
of 11 December 1997. April 2002
separate ventilation in mining activity in the gassy mines
56/2007: Sb.
176/2011: Sb.
110/2014: Sb.
The Czech mining Office lays down pursuant to § 6 paragraph 1. 6 (a). and Act No. 61/1988)
Coll. on mining activities, explosives and the State Mining Administration:
§ 1
The scope of the
The Decree lays down the requirements on separate ventilation device, its
the design, operation and control in mining activity in the gassy
mines. ^ 1) This Decree was announced in accordance with the directive of the European
Parliament and Council Directive 98/34/EC of 22 December 2004. June 1998 on the procedure for
the provision of information in the field of standards and technical regulations and legislation
for information society services, as amended by Directive 98/48/EC.
§ 2
Basic concepts
For the purposes of this Ordinance shall be deemed to
and lutnu-pipe) divorce from metal mining winds usually or
plastic materials,
(b)), nevyztuženou-lutnu elastic flexible lutna of soft plastic
materials without internal bracing that maintains its round shape,
(c)) the ventilation stroke-report joined luten manned lutnovým
a fan or other source of pressure (hereinafter referred to as "the fan"),
(d)) the main ventilation stroke-stroke to the separate ventilation ducting to vyústěný
průchodního větrního stream, equipped with one or more fans,
(e) the speed of mine) to the local winds-winds coursing through mine speed
determined by measuring at one point of the mining works,
(f)) additional ventilation devices-devices separate ventilation to increase
local mining speed of winds (duvka, free fan, etc.),
g) a wind current-mining winds flowing punch mine
partly as a result of the vacuum or overpressure induced by the main
fan,
h) speed of mine of the winds-the average speed of the wind flowing through mine
identified measurements in the cross-section of the mining works,
I) separate ventilation-ventilation neproraženého mine lutnovým
pulling or lutnovými strokes with one or more fans, that
may be blowing, suction, suction or blowing the combined the combined,
j) separate ventilation blowing-separate ventilation, in which mining
winds of foukány průchodního větrního current release,
k) separate ventilation suction-separate ventilation, in which mining
the winds of space to the exhausted průchodního větrního stream,
l) section overlap the strokes-lutnových section of the mine, in which overlaps
the main ventilation duct with the side stroke lutnovým stroke,
m) the mouth of the lutnového stroke-end of the lutnového in the face of which the stroke is the front
the mined area, temporarily blocked or neproraženého of the mining works,
n) side ducting thrust-thrust to the separate ventilation ducting with one or
more fans, or with another source of pressure, that is not the entrance
to průchodního větrního stream and is used for ventilation section of the neproraženého
the mining works adjacent to the face following the main ducting, stroke
about) the gyrocopter-equipment installed in turn stopped breaking the output
free větrního stream from the mouth of the lutnového stroke, and changing the direction of flow on the
lateral (tangential) output via Eddy luten,
p) whirlpool lutnu-special design plate ducting to allow lateral
(tangential) output stream from the větrního plate ducting,
q) free fan-fan located outside of major and minor
the ventilation stroke with features than indicated accessory device to the separate ventilation,
r) free-stream wind wind stream vyfukující in the direction of the axis of lutnového
stroke,
with the luten-device stack) to the separate ventilation that allows smooth
lengthening the stroke nevyztuženými lutnami lutnového flexible,
t) outlets-the transition lutnového stroke lutnového stroke from mining works
exhaust průchodním větrním shock to the mining works separately
the ventilated,
in fact, the ventilation device)-the device file used when
separate ventilation, such as fans, leadership, divorce
and regulation of the winds, silencers, luten stacks, as well as dust-removing
device, or even cooler mine winds,
in the cooling device to device) designed to reduce the temperature of mine
the winds,
x) cooler mining winds-part of the system of cooling device
to ensure the removal of heat mining winds
y-branch lutnového Shung) stroke, parallel connected to the main
lutnovému stroke, in which the mine is located, cooler winds.
§ 3
General requirements
(1) separate ventilation may be operated only as a continuous, in addition to
interruption in the period strictly necessary for the verification of the presence of gas of ^ 1) and for the
maintenance of lutnového stroke, fans or their supply network.
(2) a separate ventilation can only be of materials that
do not support the spread of fire and fulfil the requirements for protection against the effects of
static electricity. These conditions are met, if the device
the requirements of Czech technical standards. ^ 2)
(3) in separate ventilation is allowed to use only luten, reservoirs
luten, silencers, dedusting equipment and coolers for mining of the winds,
for which they are known values of their aerodynamic resistance, and lutnových
fans with known performance characteristics.
(4) may be used only plate ducting and stacks luten, whose value
the pressure that these devices can be loaded, is unknown. This value
must not be exceeded when operating a separate ventilation.
(5) separate ventilation mine workings, where or can be conquered
operated only in the arrangement referred to in annex No. 2.
§ 4
The ventilation stroke
(1) the concentration of the stroke is in the luten stopped, should be carried out so as to provide the
the required tightness and reliability against unintentional disconnection.
(2) the ventilation stroke of elastic unsupported luten's necessary to secure
so that when starting up the fan was prevented from damaging the luten and to
to allow for the renewal of the stroke on the fly lutnového the fan.
(3) lutnového bushing and the stroke may not be made out of elastic
unsupported luten.
(4) Flexible reinforced plate ducting may be used in the section of lutnového
the stroke where the fan creates a vacuum.
(5) the Branching of lutnového stroke is possible only between the mouth of the lutnového stroke
and the nearest fan. cooler winds in the arrangement of mining
According to § 9 para. 1 (b). (c)), and (d)) stopped a stroke. ^ 3)
(6) the mouth of the lutnového stroke when using blasting is necessary to protect against
the intrusion of the rock to the luten.
§ 5
Fans
(1) separate ventilation Fan must admit its design
the possibility of ignition of methane or coal dust or substances that make up the
explosive mixture. For electrical and vzduchoelektrického
the fan can only be used in explosion-proof electric motor,
the suction stroke then the fan just stopped, such constructions, which excludes the
come into contact with the electric motor displacement air. When you use the fan
its design eliminates contact with air, the motor displacement
It is possible for the period necessary, especially when abrupt crossing
the permitted concentrations of methane, Motorola this fan
metanovzdušnou mixture with a concentration higher than 1.5%; This does not apply for
planned ventilation zaplynovaného mine.
(2) as complying can be treated as just such a power supply for the
the fan to ensure its continuous operation.
(3) can be used only vzduchoelektrický fan that when you break the
power supply or an increase in the concentration of methane in mine
the air outside of the fan above 1.5% automatically switches from the power to
Air actuator; technical solutions must be ensured in order to avoid
After the switch from air to the electric drive.
(4) Vzduchoelektrický and electric fan can be operated only
provided that when a drive other than the electrical energy is
prevent ignition of methane, coal dust or substances that make up the
explosive mixture of induced voltage, even if the
the fan is not plugged into the electrical circuit.
(5) If the fan plate ducting are connected, it is necessary to obtain it
protective device. ^ 4)
(6) the silencer it is necessary to use the fan in the event that the level of
the noise caused by the operation of the fan in the places where they reside permanently
the employees would otherwise have exceeded the value of the specific legal
^ 5 regulation.)
(7) when the blowing ventilation, the first fan placed at a distance of
at least 5 m from the výdušného větrního stream from the workplace, suction
ventilation in the distance of at least 5 m from the mouth of a separately ventilated at the
the mining works in mine with průchodním větrním and 3 m from the
the end of lutnového turn. Control and switching devices of the first fan
can be placed at a distance of at least 5 m from the mouth of a separately
the ventilated mine in mine with průchodním shock, and this against the
the direction of flow of the mine of the winds.
(8) electric fan separate ventilation can be located only in the
mine workings with průchodním větrním shock. In the neproraženém mine workings
electric fan can be only as part of the cooler mine
winds or odprašovacího devices located outside of the ducting, the deadlift
a side-stroke combined separate ventilation stopped, or in
a master stroke of lutnového, at a distance of at least 20 m from the
the face.
(9) Vzduchoelektrický fan located in separately ventilated mine
the work cannot be when the blowing ventilation at a distance of less than 50 m from the
the face, suction ventilation is less than 20 m from the face. Vzduchoelektrický
the fan cannot be stopped, so in turn placed between the heat sink of mine
the winds and the mouth of the lutnového. In separately ventilated mine workings with
rescuer of minerals, coal, and gas can be vzduchoelektrický
the fan at a distance of less than 200 m from the face is operated only on the
Air energy.
(10) the fan or another source of pressure of secondary lutnového stroke
only in the section places a overlay lutnových moves.
(11) the Separately ventilated mines work may be to a length of 400 m ventilation in your workspace
only lutnovým stroke with a fan or fans located in the
průchodním větrním stream.
(12) the fan in the main stroke, stopped outside the Shung, is placed in the
a distance of at least 3 m away from another fan, heatsink mining winds
or odprašovacího devices that are with this fan are presented in
themselves.
§ 6
Separate ventilation blowing
Separate ventilation blowing may be used in the arrangement shown in figure and
Annex No. 2, under the conditions that the free wind stream from the lutnového
the stroke is parallel to the axis of the mining works and that between the mouth of the lutnového and
the face is not permanently disturbed (e.g., technological equipment). In this
the arrangement of the luten tray may be used, provided that when
the Exchange does not interrupt a separate ventilation.
§ 7
Separate ventilation suction
Separate ventilation inlet may be used in the arrangement shown in figure (B)
Annex No. 2.
§ 8
Separate ventilation combined
(1) separate ventilation combined with the main lutnovým suction intake and stroke
the secondary lutnovým by pulling the blowing may be used in the arrangement referred to in
image (C) Annex 2, under the conditions that
and) volume flow of the winds in the main stroke is stopped by at least 20%
greater than the volume flow of the winds stopped, the next stroke,
(b) the wind stream) free from the next lutnového stroke is parallel with the axis of the
the mining works,
(c) between the mouth of the adjacent lutnového) stroke and the face is not a free wind
current permanently distorted,
(d)) the mouth of the main lutnového of the stroke is during the excavation of a stamping machine features
closer to the face than the operating position of the excavation machines.
(2) separate ventilation combined blowing with the main lutnovým pulling
the blowing and lutnovým pull the intake may be used in the arrangement
According to figures D, D2 or D3 image of Annex No. 2 and under the conditions that
and the ventilation stroke) side is equipped with a mobile dedusting device,
(b)) of the winds in the main volume flow stopped, the stroke is at least 20%
greater than the volume flow of the winds stopped, the next stroke,
(c) the final part of the main lutnového) stroke is equipped with a device
allowing for the interruption to the free stream větrního (closing klapa),
Eddy lutnami and tank luten. The closing may be replaced with klapa
Eddy performed the situated before lutnami in the direction of flow of the winds in
stopped, stroke,
(d) the indication of the authority of the excavation of a cutting) machines into operation is possible only
the current operation of secondary stroke with inlet lutnového dust and
the current features of the vortex in the main stroke luten stopped with a break
its free větrního stream,
e) when stopping or failure of dust collectors will stop running cutter
authority of the excavation machines, interrupts traffic Eddy luten and restores the
free wind stream from the lutnového stroke
(f)) for the exchange of the tray as shown in Figure E luten Annex No. 2 will be
stopped work at the face of technology.
(3) when changing the direction of the excavation of the mining works by more than 60 St. may be
the combined blowing ventilation under paragraph 2 is applied in accordance
the image F or F2 image of Annex No. 2 and under the conditions that
and a side-pull will not be lutnovým) ventilated greater length of the mining works
than 200 m,
(b) the ventilation stroke) side is equipped with a mobile dedusting device,
(c)) of the winds in the main volume flow stopped, the stroke is at least 20%
greater than the volume flow of the winds stopped, the next stroke,
(d)) of the winds along the adjacent mining speed lutnového stroke is equal to or
greater than the rate in accordance with § 10 paragraph 1. 1,
(e)) the free wind stream from the lutnového of the hot stroke will be permanently
wind flow is interrupted and escorted Eddy lutnami,
(f)) when you stop or malfunction of the dust collectors will stop running cutter
authority of the excavation machines.
(4) separate ventilation combined blowing with the main lutnovým pulling
the blowing and blowing side by pulling the lutnovým may only be used in
the arrangement set out in annex No. 2 (Figure G), and subject to the conditions that
and stopped in the next stroke) is located at mining winds, cooler
b) volume flow side lutnovým stroke is at least 40% less than
volume flow of the winds in the main stroke, stopped
(c)) for the entire period of the excavation of the concentration of methane in the mine air embossed
mine does not exceed 0.5%.
At the time, and in the cases determined by the project a separate ventilation may be
operation of secondary stroke lutnového stopped.
§ 9
The location of the coolers for mining of the winds
(1) the cooler winds as part of the equipment of the mine separate ventilation
neproraženého mine can be placed only
and) in the mine workings with průchodním větrním at the beginning of the main stream
the hot stroke, lutnového
(b)) in the neproraženém mine workings in the next stroke when you stopped blowing
mixed-mode ventilation,
(c)) in the neproraženém mine workings in the shunt resistor of main hot-lutnového
a stroke in the manner prescribed in Appendix 2 (Figure H) at a distance of
250 m from the mouth of lutnového stroke; instead of installing a shunt resistor provides project
separate ventilation so that the direction of flow of mining winds both
parallel branches of the main lutnového the stroke was favourable,
(d)) at the neproraženém mine workings in the capital stopped blowing in stroke
a distance of 200 m from the mouth of lutnového stroke, where the concentration of methane in the
the course of the excavation shall not exceed 1.0%.
(2) the direction of flow of the winds in the main mining stopped in the stroke
parallel to the shunt, when placing the heatsink mining winds under paragraph
1 (b). (c)), remotely controls the continuous sensor
the speed of the winds located according to annex No 2 (picture d) and its change
the signals at the central control station. A separate project
ventilation also contains measures and procedure for case changes the direction of flow
the winds in the main mining stopped, stroke.
(3) the Organization shall ensure that the remote control operation of the cooling equipment and
signaling his break on a central control station. Project
It also includes a separate ventilation measures and the procedure in case of interruption of the
operation of the cooling device.
§ 10
The speed of the mine of the winds
(1) separate ventilation it is necessary to design and operate so that
speed mining winds in separately ventilated mine workings, with the exception of
section lutnových overlay, stroke
and at least 0.3 m.) with-1 if this is a site where the in otvírce and
the preparation consists of mining activities for more underground areas,
(b)) at least 0.5 m. s-1, where the concentration of methane in the mine air is
higher than 0.5%,
(c)) at least 0.15 m.s-1 development and mining in the vertical.
(2) in the section separately ventilated mine, where mining speed
the wind does not reach the speed specified in paragraph 1 and where it is at the same time
the concentration of methane detected more than 0.8%, it is necessary to use additional
the ventilation device to the local speed of mine measured winds of 0.3 m
the highest point of the reinforcement of the mining works were equal to or greater than
the speed referred to in paragraph 1 (b). (b)).
(3) Whirlpool lutnu must be placed so that the local rate of mine
the winds, measured in the direction of a tangent flow mining winds 0.3 m
the highest point of the reinforcement reached the mine at least 1.5 times the
speed mining winds under paragraph 1.
§ 11
cancelled
§ 12
Continuous control of the concentration of methane
(1) continuous review of concentration methane sensor is done in the
separately ventilated mine workings with electrical equipment, where
or conquer. The sensor is to be positioned at a height of 0.1 m below the highest point
reinforcement, in place of the highest concentrations of methane in the survey
distance:
to 3.0 m) from the face when ventilation intake and when mixed
separate ventilation under § 8 para. 2, and it cannot be placed in
distance of less than 0.5 m from the mouth of the intake stroke, lutnového
(b)) to 10 m from the face when the blowing ventilation and when mixed
separate ventilation under § 8 para. 2 and 4, outside the direct influence of free
větrním of the mouth of the lutnového stream.
(2) for blasting can be sensors referred to in paragraph 1 to
a safe distance from the place of blasting work.
(3) when ventilation combined blowing under § 8 para. 2, the
continuous control of concentrations of methane gas it carries out:
and in free větrním stream) from the next stroke, with the lutnového sensor
shall be placed at a distance of from 5 to 10 m from the lutnového stroke
(b)) at the point of overlap in space odprašovacího lutnových moves the device in
height of 0.1 m below the highest point of the reinforcement of the mining works.
(4) when the location of the cooling device or electric fan in the
-pressed mine workings, at a distance of more than 50 m from the face,
continuous control of the concentration of methane in place makes this
device. The sensor is placed at a distance of 5-10 m from the device
upstream mining winds at a height of 0.1 m below the highest point
reinforcement of the mining works.
(5) the Organization shall ensure that the concentration of methane exceeding was
indicated on the central control station shall define a vulnerable area
the composition of the atmosphere and the illegal will determine how awareness of the endangered
employees of exceeding the concentration of methane.
section 13 of the
Continuous control of the concentration of carbon monoxide
(1) a continuous control of the concentration of carbon monoxide sensor is
have to make the stream in the větrním, odváděném of separately ventilated
the mining works, where the making or conquer.
(2) the sensor shall be located:
and separately ventilated profile) in the excavation of more than 50 m in
distance from 5 to 10 m before its port to the průchodního větrního
stream when the blowing and combined blowing through a separate ventilation,
(b)) in the free stream větrním of lutnového to
průchodního větrního stream at a distance of from 5 to 10 m from the end of
lutnového stroke and combined suction suction through a separate ventilation.
(3) the Organization shall ensure that carbon dioxide concentrations exceeding the
monoxide was indicated at the central control station.
At the same time define the area of the affected air and shall determine the composition of illegal
the affected employees about how awareness of exceeding the
the concentration of carbon monoxide.
§ 14
Check fan operation
(1) the Organization shall ensure that the separate ventilation fan
mined and temporarily unfilled excavation mine workings, the heads of šibíků and
dobývek was controlled remotely and their operation will be signalled by the
the central control station. Check operation of fan one
separately ventilated mine can be performed as cumulative.
(2) the interruption of a separate ventilation shall ensure organisation of the immediate
turn off electrical equipment and machines located in neproraženém mine
the work, from a predefined location.
§ 15
Time limits and scope of the checks
(1) the status of the device to the separate ventilation mined mine workings is necessary to
check at least once in each half of the month, when the location of the
cooler winds by mining § 9 para. 1 (b). (d)), at least once
a week. During this inspection, you must also measure the leakage rate of mine
the winds
and supply, release)
(b) being removed from the face or) supplied to release the side pull, lutnovým
(c) separate ventilation from being removed) průchodního větrního stream,
(d)) in the mine workings with průchodním větrním shock.
(2) upon the establishment of these ventilation measurement verifies compliance with the
local velocity (section 10 (2)).
(3) on the outcome of the inspection takes and signs the record of one who control
has made. The recording will be stored ^ 6) for at least 1 year.
section 16 of the
Separate ventilation planning requirements
(1) the Organization shall ensure that the excavation mine workings on the projected length of the
greater than 50 m separate ventilation project was prepared in accordance with annex
No 1.
(2) a separate ventilation should be projected so that when
taking into account all the separate ventilation device and the usual
tightness of the lutnového tension with the largest planned length of neproraženého
the mining works to ensure compliance with the whole length of the prescribed speed
mining of winds, the composition of the atmosphere and of suitable microclimatic
conditions. ^ 5)
(3) if the project referred to in paragraph 1 form part of technological
^ 7) procedure or the projected length of the excavation is less than 50 m,
in the technological procedure basic information and requirements on a separate
ventilation of the mining works, particularly
and separate ventilation, method)
(b)) the layout of equipment separate ventilation in main and secondary
stopped, turn with the determination zone of overlap,
(c)) the type, number and location of the fans and silencers,
d) required volume flow of the winds for ventilation of mines mining works,
(e) lutnového bushing and thrust into) průchodního větrního stream, distance
the mouth of the lutnového stroke from the face,
f) disposal of captured dust technology
process,
g) way of stringing, joining and sealing and ventilators, luten
lengthening the stroke, lutnového
(h) the location of the device, odprašovacího), where appropriate, the refrigeration system.
§ 17
Measures to ensure the safety and health at work and the
operational safety
(1) to remove the effects of gas, for a separate interrupt
ventilation (§ 3 (1)) and in case of faults separate ventilation shall designate
separate ventilation project measures to ensure the safety and protection of
occupational health and safety, notably
and the definition of areas at risk of illegal) composition of mine air ^ 8)
(hereinafter referred to as "vulnerable area"),
(b) the obligation to promptly shutdown) electrical equipment and machines in the
the affected area, ^ 9)
(c)) the time after which it is necessary to recall workers from neproraženého
the mining works and out of the affected area,
d) measures to prevent the entry of unauthorized persons to the affected area,
e) specifying how the locations and intervals checks the composition of mine air
f) determine how when restoring separate ventilation and subsequent
inspection of mining works;
g) determine how the next time you switch on electrical equipment.
(2) the Racing of the mine shall ensure that the measures referred to in paragraph 1, including map
documentation showing the mining and wind the situation relevant to the
total výdušnému stream, all electrical wiring, places intended for
disconnect electrical power and areas intended to disable it
part of the emergency plan ^ 10) mine.
section 18
Special provisions
(1) in cases where there is a risk of delay in rescuing people or
When disposing of the accident, it is possible to derogate from the time necessary for
the provisions of this order, if the most necessary measures will be taken to
ensure the safety and health at work and the safety of operations.
(2) another way of solution, other than that referred to in this Decree and that
provides at least the same level of protection of the safety of persons and property,
must be included in the spending plan, the preparation and extraction, or plan to
collateral or liquidation plan, or plan to change these
activities.
§ 18a
Mutual recognition clause
If this Decree lays down the requirements beyond the requirements laid down
the relevant regulations of the European communities, these shall not apply
the requirements for products that have been produced or placed on the market in
a Member State of the European Union or Turkey, or having origins in
one of the States of the European free trade association that is
at the same time a party to the European economic area,
provided, that such product is
and technical rules), which are for the manufacture or placing on the market,
where appropriate, for the use of this product in one of these States
binding,
(b)) technical standards or rules of practice that are released
national standardisation body or entity equivalent Department built,
in accordance with the laws and requirements of the State which is a Contracting
a party to the European economic area,
(c)), the international technical standards, legitimately used in one of the
of those States, or
d) traditional or innovative production methods used in any of the
those States, in accordance with its legislation, for which there is
sufficiently detailed technical documentation to ensure that this product
can be assessed for the purpose of use, if necessary, on the basis of
additional (not identical) product tests,
If these technical regulations, technical standards, codes of good practice
or how to guarantee protection for the legitimate interest of the
This protection in the Czech Republic.
§ 19
Transitional provisions
(1) the provisions of § 5 para. 11, § 13, 16 and 17 do not apply to workings
the excavation was initiated prior to the entry into force of this order, and
gassy mines, for which he was prior to the entry into force of this order
the Government of the United States declared the inhibition programme and established the term
their liquidation.
(2) on the gassy mines I class risk ensures the organization performance
the provisions of § 5 para. 11, § 13, 16 and 17 to two years from the entry into force of
of this order.
section 20
The effectiveness of the
This Decree shall enter into force on 1 May 2004. June 2002.
President:
Prof. JUDr. Ing. Makarius, CSc. v. r.
Č. 1
Separate ventilation project
1. determination of mining and geology-geological and mining-technical conditions
Before designing a separate ventilation it is necessary to evaluate the expected
mining and geology-geological and mining-technical conditions of the envisaged
reminiscent of the mining works, even in terms of the danger of ignition
methane (hereinafter referred to as "CH4"), and specify:
1.1. the Projected length of the excavation (L) [m]
1.2. Gauge mine with projected [m2]
1.3. the maximum cross section projected mining
the work, part-section of mine workings SMAX [m2]
1.4. The estimated exhalaci CH4
in the projected mine workings q1 [M3.s-1]
1.5. The estimated carbon exhalaci
carbon dioxide (CO2) in the projected
mine workings q2 [M3.s-1]
1.6. The estimated radon (exhalaci
"Rn") in the projected mine workings Green [Bq. s-1]
1.7. The concentration of CH4 in the větrním stream průchodním
(hereinafter referred to as "PVP") before the outlet lutnového
the stroke to a projected mine c1 [%]
1.8. The concentration of CO2 in the PVP from the outlet
lutnového to projected mining
díla c3 [%]
1.9. The concentration of the Rn in PVP against the outlet
lutnového to projected mining
the works of cVt [Bq m-3]
1.10. the permissible concentration of CH4 in the projected
mine workings (c) [%]
1.11. the permissible concentration of CO2 in the projected
mine workings c2 [%]
1.12. the permissible concentration Rn in the projected
mine workings cRn [Bq m-3]
1.13. the weight of explosives used on one zabírku and [kg]
1.14. the total amount of toxic fumes from the selected
the value of the conventional explosives are expressed AS b [m3.kg-1]
1.15. the permissible concentration of conventional CO in
exhaust fumes after blasting work cCO [%]
1.16. The length of the zabírky blasting LZ [m]
1.17. Specific gravity of rock róh [kg.m-3]
1.18. The time required to reduce the fumes after blasting
work on permissible concentration of conventional tau [s]
What
1.19. The overall performance of diesel engines working
at the same time in the projected mine workings PN [kW]
1.20. The largest estuary of the distance of the main holiday
lutnového from the face of the hot-L1 stroke [m]
1.21. The largest estuary of the distance of the main holiday
lutnového the suction stroke from the face of the L2 [m]
1.22. The average projected luten (with rectangular
hydraulic) D [m]
1.23. violation of radioactive equilibrium Coefficient
(0,2 - 0,5) p
1.24. The smallest mine winds speed
in the mine workings Vmin [m.s-1]
1.25. Leakage rate of mine referred to the wind
forefield QVO [M3.s-1]
1.26. Leakage rate of mine stopped, winds
stroke blowing QVF [M3.s-1]
1.27. the volume flow of the winds in the mining stopped,
QVS intake stroke [M3.s-1]
1.28 volume flow mining winds lutnovým
ventilator located in PVP QV [M3.s-1]
1.29. Leakage rate of mine of the winds in PVP QVpvp [M3.s-1]
1.30. the volume flow of the winds blowing out of the mine in the next
When stopped, turn the blowing ventilation
with an extra stroke blowing QVFp [M3.s-1]
1.31. the number of Eddy luten n [DC]
1.32. The length of the slot one whirlpool plate ducting ls [m]
1.33. The width of the slits one whirlpool plate ducting with [m]
1.34. Output rate of mining winds flowing
from one plate ducting in [m.s-1]
1.35. The critical length of the projected mining
works for the dilution of the combustion gases after the blasting work Rs [m]
2. the proposal for separate ventilation
Separate ventilation project content is:
and specify the input data) that characterize the geological and mining and geology
mining-technical conditions of the projected excavation referred to in point 1. This
of the annex,
(b) determine the expected plynodajnosti) CH4, CO2, CO, and Rn,
(c)) the calculation of volume flow of mine ventilation QVO needed for wind
reminiscent of the mining works according to the criteria of section 3. of this annex,
d) determine how a separate ventilation, its arrangement and bushing
lutnového to průchodního větrního stream,
(e) determine the technical parameters of the main) lutnového stroke
(f) determine the technical parameters) lutnových fans and silencers and
their location in the stroke, stopped
g) determination of volumetric flow in větrního stream, průchodního
h) determination of technical parameters of the odprašovacího device and its location
in a stroke, stopped
I) determine the technical parameters of the refrigeration system and its location in the
stopped, stroke,
j) determine the technical parameters and the arrangement of the next stroke, lutnového
the continuous control of concentrations) to determine CH4 and CO, including the location of the
sensors, alarm and determination of the outlet of the emission limit values of concentration.
3. Calculation of the volume flow of the winds
Volume flow of mine ventilation QVO needed for wind
the mining works and applied for his release may be considered
acceptable if the requirement as follows:
QVO > = (QV1 QV2,, ... QVn)
QV1-volume flow of the winds needed to reduce mining
exhalujícího CH4 concentration to an acceptable limit,
QV2-volume flow of the winds needed to reduce mining
the concentration of CO2 exhalujícího to the allowed limit,
QV3-volume flow of the winds needed to reduce mining
the concentrations of the exhaust gas after the digging work on the allowed limit,
QV4-volume flow of mine needed to achieve the lowest wind
the speed limit of mining of the winds,
QV5-volume flow of the winds needed to reduce mining
the concentrations of the exhaust fumes of diesel engines
permissible limit,
QV6-volume flow of the winds needed to reduce mining
the concentration of the exhalujícího Rn on the allowed limit,
QV7-volume flow mining winds needed to comply with the appropriate
microclimatic conditions.
3.1. Volume flow according to the criteria to reduce the concentration of CH4
the permissible maximum limit:
100. q1
QV1 =------[M3.s-1]
c-c1
3.2. Flow according to the criteria to reduce the concentration of CO2
the permissible maximum limit:
100. q2
QV2 =-------[M3.s-1]
C2-c3
3.3 volume flow according to the criteria to reduce the concentration of
fumes after blasting work to the value of the permissible limits
conventional CO.
3.3.1. Separate ventilation mouth as shown in Figure A of Annex No. 2
Conditions: a) L1 < = 5 (S) 1/2
(b)) #L-the smaller of the values for L
or RS
100. A.b. [0,327 + 0,0234. ( L1/D) + 0.00025. (L1/D) 2]
LKR = -------------------------------------------------
With cCO.
0.888 A.b. (S) 2. (#L) 2 1/3
QV3F =-----. [------------------] [M3.s-1]
Tau (cCO) 2
3.3.2. Separate ventilation suction as shown in figure (B) of annex 2
5.09. And 1000 (S) 1/2 1/2
QV3 = ------- . [-------------] [M3.s-1]
URcCO.tau róh. LZ
3.4. Volume flow according to the criterion of the lowest permitted speed
in a profile reminiscent of the mining works:
QV4 = 0.5. SMAX > 0.5% for c [M3.s-1]
QV4 = 0.3. SMAX = 0.5 for the c = QVF > = 0.25. SMAX > 0.5% for c, CH4
0.833. QVS > = QVF > = 0.15. SMAX for c = 0.5% CH4 <
(c)) when calculating in terms of reducing the concentration of exhaust gas after
blasting work is the calculation for the main ducting the suction stroke
to be carried out pursuant to 3.3.2.
Volume flow of winds provided a side-stroke lutnovým
the blowing is the maximum value of the calculated QVO, taking
to ensure ventilation of the space along the adjacent lutnového
the stroke is valid
QVO = QVF = (0.3:0.8). QVS [M3.s-1]
3.8.3. Stretch the overlay the main intake and secondary hot
lutnového stroke is chosen in the range (0.5 to 1). the square root of S.
Lead the exhaust mouth of the next hot before the
the main intake should be as small as possible, max. the square root of S.
2.4 volume flow in a mixed-mode ventilation separate QVO
blowing by images (D) and (E) Annex 2:
3.9.1. In terms of the reduction of the concentration of CH4, CO2, diesel fumes
diesel engines and exhaust emission Rn applies to the determination of the QVS in
the secondary intake stroke relationships under stopped, 3.1., 3.2., 3.5.
and 3.6., the main thrust should be blowing lutnovým on
forefield bring QVF
QVF > = 1.2 (the highest of the QVS 3.1., 3.2., 3.5., or 3.6.) [M3.s-1]
3.9.2. Volume flow to ensure the lowest permitted speed
mining winds along the main stroke of the hot is calculated
According to 3.4. and along the adjoining intake stroke lutnového as follows:
0.833. QVF > = QVS
3.9.3. Volume flow mining winds designed to reduce the concentrations of
fumes after blasting work is calculated according to the 3.3.1:
3.9.4. Calculating the number of Eddy luten:
The number is guaranteed by the relationship
QVO
n = ------ [ks]
SS..
Note: the output speed of the winds from the whirlpool plate ducting
tends to be chosen in the range of 15 to 30 m.s-1.
3.10 volume flow QV0 composite separate ventilation
the blowing as shown in Figure G of Annex No. 2 is determined
for the main thrust of the ducting in the reduction of the concentration of
CH4, CO2, reducing the concentration of exhaust gas after the blasting work
compliance with the lowest permitted speed in the profile
the mining works, reducing the concentration of exhaust fumes
diesel engines, reducing the concentration of the exhalujícího Rn
According to the relations, 3.1, 3.2, 3.3.1, 3.4, 3.5, 3.6.
3.10.1 volume flow side-pull lutnovým
QVFp = < 0.6. QVF 4. calculation of the required volume flow of mining průchodním větrním winds stream: the value of a volume flow of mining winds in PVP is determined by the relationship QV QVpvp > =--[M3.s-1].
0.7
While the flow of mine winds fan QV located in PVP
must take into account:
-the required volume flow release according to all the criteria with regard to the
the final projected length of excavation (L),
-operating fan points, specifying their type and their location
(the station of mine workings) in turn, stopped
-local and the frictional resistances in the main separate ventilation equipment stopped
stroke,
-technically achievable coefficients leaks used types luten and
Accessories a separate ventilation.
Č. 2
Separate ventilation equipment
1. Overview of USED BRANDS
2. BLOWING VENTILATION
Image And
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
3. suction VENTILATION
Figure B
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
4. SEPARATE VENTILATION COMBINED SUCTION (with the main SUCTION LUTNOVÝM STROKE)
Image (C)
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
5. SEPARATE VENTILATION COMBINED with MOUTH (with main BLOWING LUTNOVÝM
Tension)
Figure D
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
5. and SEPARATE VENTILATION COMBINED with MOUTH (with main BLOWING LUTNOVÝM
Tension)
Figure D2
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
5. (b) the SEPARATE VENTILATION COMBINED with MOUTH (with main BLOWING LUTNOVÝM
Tension)
Figure D3
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
6. SEPARATE VENTILATION COMBINED with MOUTH when REPLACING the TRAY
Figure E
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
7. SEPARATE VENTILATION COMBINED BLOWING when YOU CHANGE the DIRECTION of the EXCAVATION
Figure F
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
7. SEPARATE VENTILATION and COMBINED BLOWING when YOU CHANGE the DIRECTION of the EXCAVATION
Figure F2
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
8. SEPARATE VENTILATION COMBINED with MOUTH (with main and SECONDARY
BLOWING LUTNOVÝM STROKE)
Figure G
Note: the type, number and location of the stroke in the fan stopped, shall determine
separate ventilation project.
9. POSITION the COOLER WINDS in a MINE
Picture (H)
1) § 79 paragraph 2. 2 Decree No. 22/1989 Coll. on occupational safety and health
at work and the safety of operations in mining activities and mining
non-reserved minerals underground.
2) for example, ČSN 33 2030 protection against dangerous effects of static
electricity.
3 § 99) Decree No. 22/1989 Coll.
4) § 220 Decree No. 22/1989 Coll.
5) Government Regulation No. 178/2001 Coll., laying down the conditions of protection
health at work.
Government Regulation No. 502/2000 Coll., on the protection of health from the adverse
effects of noise and vibration.
6) § 23 para. 4 of Decree No. 22/1989 Coll.
7) § 43 of Decree No 22/1989 Sb.
8) § 83 of Decree No 22/1989 Sb.
9) § 242 Decree No. 22/1989 Coll.
10) Decree No. 71/2002 Coll., on reaching accidents in mines and mining
oil and natural gas.
